Profile: McKay Equipment specializes in construction and mining equipment. Our product line includes valves, strainers, actuators, solenoid valves, test gauges, pressure switches and back flow preventers. Our cooling tower is designed to protect instruments in high temperature applications. It can be used for process media temperatures up to 570°F, and can reduce the media temperature by as much as 500°F. Our back flow preventers are featured with top-entry or double check valve assemblies, which are designed to protect against the backflow from a cross-connection with a source of a non-health hazard pollutant